US11309602B2 - Casing for battery pack and battery pack - Google Patents
Casing for battery pack and battery pack Download PDFInfo
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- US11309602B2 US11309602B2 US16/433,680 US201916433680A US11309602B2 US 11309602 B2 US11309602 B2 US 11309602B2 US 201916433680 A US201916433680 A US 201916433680A US 11309602 B2 US11309602 B2 US 11309602B2
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Images
Classifications
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6562—Gases with free flow by convection only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
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- H—ELECTRICITY
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/271—Lids or covers for the racks or secondary casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present disclosure relates to a technical filed of power battery, and particularly to a casing for a battery pack and a battery pack.
- the casing of the power batteries is usually made of a sheet metal member or a cast aluminum member because it needs to bear the weight of the batteries.
- the batteries will be subjected to various external impacts, and the casing will directly transmit the external impact force to the batteries when subjected to the external impacts, which may bring wear and rupture to the batteries, in the long run, and a safety accident may occur.
- the object of the embodiments of the present disclosure is to provide a casing for a battery pack and a battery pack, wherein the casing has good bearing capacity, impact resistance and heat dissipation capability.
- the embodiments of the present disclosure provide a casing for a battery pack, wherein the casing has a receiving space and an opening in communication with the receiving space, the receiving space is formed by a wall portion of the casing, and the wall portion is formed from two or more stacked base plates, between which a plurality of cavities are formed, wherein an island is disposed within the cavity.
- the base plates comprises a first base plate and a second base plate, and the cavity is formed by an outwardly projecting convex wall of the second base plate and a flat wall of the first base plate corresponding to the convex wall; and the island is formed by recessing the convex wall toward the flat wall.
- the first base plate and the second base plate are stacked in a direction from the receiving space to an exterior of the casing, and a portion of the convex wall corresponding to the island is attached to the flat wall.
- the plurality of cavities are in communication with each other to form a flow passage, and the island is disposed within the flow passage.
- a portion of the island attached to the flat wall is formed in a shape of strip or ellipse, and a long side of the strip or a major axis of the ellipse is parallel to the length direction of the flow passage.
- a ratio of a height h of the cavity to a width W of the cavity is in a range of h/W ⁇ 1; and a ratio of a length L of the island to a width W 1 of the island is in a range of 2 ⁇ L/W 1 ⁇ 5, wherein the length L is in a range of 5 mm ⁇ L ⁇ 15 mm.
- a first space L 1 is defined as a distance from a center of the island to one side of the cavity, wherein the first space L 1 is equal to or greater than the width W 1 of the island.
- a second space L 2 is defined as a distance between two adjacent islands in each row in the length direction of the flow passage, wherein the second space L 2 is equal to or greater than the first space L 1 .
- the embodiments of the present disclosure further provide a battery pack, comprising: a battery assembly; a casing of any one of the embodiments as described above; and a cover closing the opening of the casing to form an enclosed space for accommodating the battery assembly together with the receiving space of the casing.
- the casing provided by the present disclosure not only can improve the structural strength of the casing and of the cavities, but also can change the flow capacity and flow rate of the fluid in the cavities, which can make the temperature distribution of the casing more uniform.
- the battery package provided by the embodiments of the present disclosure comprises the casing as described above, which can increase the heat exchange efficiency of the battery module, and further improve the thermal management of the battery pack.
- FIG. 1 is a schematic view showing a structure of a battery pack according to an embodiment of the present disclosure
- FIG. 2 is a schematic view showing a structure of a casing for a battery pack shown in FIG. 1 viewed from one angle;
- FIG. 3 is a schematic view showing the structure of the casing shown in FIG. 2 viewed from another angle;
- FIG. 4 is a cross-sectional view of the casing shown in FIG. 3 taken along the line A-A;
- FIG. 5 is an enlarged schematic view showing a structure of the region B in the cross-sectional view shown in FIG. 4 ;
- FIG. 6 is a schematic view showing a structure of a flow passage formed by a plurality of cavities in the casing shown in FIG. 3 ;
- FIG. 7 is a cross-sectional view of the casing shown in FIG. 6 taken along the line C-C;
- FIG. 8 is a schematic view showing a structure of another casing for the battery pack shown in FIG. 1 ;
- FIG. 9 is a cross-sectional view of the casing shown in FIG. 8 taken along the line D-D;
- FIG. 10 is an enlarged schematic view showing a structure of the region E in the cross-sectional view shown in FIG. 9 ;
- FIG. 11 is an enlarged schematic view showing a structure of the region F in the casing shown in FIG. 8 , wherein:
- the orientations in the following description refers to the directions as shown in the figures, and are not intended to define the specific structure of the present invention.
- the terms “installation”, “connected to”, and “connected with” are to be understood broadly, and may be, for example, a fixed connection, a disassemble connection, or an integral connection; they can be connected directly or indirectly through an intermediate medium.
- the specific meaning of the above terms in the present disclosure can be understood by the person skilled in the art according to actual circumstance.
- the terms “first”, “second”, and the like are configured for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying the number of indicated technical features.
- FIG. 1 to FIG. 11 For better understanding the present disclosure, a casing for a battery pack and a battery pack according to the embodiments of the present disclosure will be described in detail below by reference to FIG. 1 to FIG. 11 .
- a battery pack comprising: a casing 1 , a battery assembly 2 and a cover 3 .
- the cover 3 and the casing 1 form an enclosed space for accommodating the battery assembly 2 .
- the casing 1 has a receiving space 10 and an opening in communication with the receiving space 10 , and the receiving space 10 is formed by a wall portion 11 of the casing 1 .
- the wall portion 11 is formed by two or more stacked base plates, between which a plurality of cavities 20 are formed.
- the casing 1 can be formed by pressing metal base plates.
- the battery assembly 2 and management system thereof in the battery pack have a weight of 200 Kg or more, and the wall portion 11 formed by pressing the metal base plates has a wall thickness t in the range of 1 mm ⁇ t ⁇ 6 mm. If t ⁇ 1 mm, the wall portion 11 of the casing 1 is too thin to bear the battery assembly 2 and other components in the battery pack, and is easily broken during use. If t>6 mm, the casing 1 occupies a too large volume, which is not conducive to increase of an energy density of the battery pack. In order to increase a structural strength of the casing 1 with a limited occupation space, a plurality of cavities 20 are formed between the two or more base plates to enhance the structural strength and bearing capacity of the casing 1 .
- such a configuration not only can improve a rigidity and strength of the casing 1 , but also can improve a vibration and impact resistance of the casing 1 by the cavities 20 .
- the cavities 20 can absorb and disperse part of the external impact force, thereby producing an effect of buffer and damping, and thus improving an impact resistance of the entire battery pack.
- such a configuration can reduce the space occupied by the casing.
- the member with cavities formed by the casting process generally has a wall thickness greater than 3 mm, and thus a casing with an internal cavity formed by the casting process will have a wall thickness of at least 6 mm, and accordingly will occupy a large space, which is not conducive to the increase of the energy density of the battery pack.
- an operating environment temperature generally falls within a range from ⁇ 30° C. to 80° C.
- An optimal operating environment temperature of the power batteries is in a range from 20° C. to 40° C., in which the power batteries have a best charge and discharge performance and a longest service life, and there is a risk of short circuit when charging the power batteries below 0° C. Therefore, a reasonable battery thermal management design is critical to the performance and service life of the power batteries.
- the plurality of cavities 20 in the wall portion 11 of the casing 1 may be filled with a heat conductive material, such as but not limited to, a phase change material having a solid-liquid transition temperature or a cooling liquid, to realize the thermal management of the battery assembly 2 .
- a heat conductive material such as but not limited to, a phase change material having a solid-liquid transition temperature or a cooling liquid.
- the thermal management of the battery assembly 2 is generally performed by a built-in/external water-cooling system
- the heat conductive material disposed within the cavities 20 is a liquid or flexible material.
- the external impact force can be transmitted to the internal liquid or the flexible material by the cavities 20 . Since the liquid or flexible material has a high deformation performance, the external impact force can be further absorbed, thereby further improving the impact resistance of the casing 1 .
- the casing 1 for a battery pack provided by the embodiments of the present disclosure not only can improve the bearing capacity and impact resistance thereof, but also can realize the thermal management of the battery assembly 2 by filling the plurality of cavities 20 with the phase change material or cooling liquid, which can further improve the impact resistance and mechanical property of the casing 1 , with a simple structure, light weight and high reliability.
- the wall portion 11 of the casing 1 includes a bottom wall 111 and side walls 112 surrounding the bottom wall 111 on a peripheral side of the bottom wall 111 .
- the bottom wall 111 and the side walls 112 of the casing 1 are integrally formed, to improve a sealing property of the casing 1 and avoid a seal failure between the bottom wall 111 and the side walls 112 due to the connection of the both.
- the casing 1 includes a brim portion 12 extending from the opening of the receiving space 10 in a direction away from a peripheral side of the receiving space 10 .
- the brim portion 12 is connected with the cover 3 to form the enclosed space for accommodating the battery assembly 2 .
- the casing 1 can be formed by an integral structure of the bottom wall 111 , the side walls 112 and the brim portion 12 , to further improve the sealing property of the casing 1 .
- the metal base plate is made of materials with a tensile strength ⁇ 100 Mpa, such as aluminum, magnesium, iron and alloys thereof with the tensile strength ⁇ 100 Mpa, which can avoid too thin part or tensile fracture of the casing caused by deformation of the base plate during the forming process.
- the material of the base plate has an elongation at break ⁇ 12%, which can ensure that the base plate has a certain amount of deformation during the process of forming the side walls 112 and the brim portion 12 of the wall portion 11 , thereby ensuring the sealing property and strength of the casing 1 . Since the battery pack may encounter a wading environment during use, the side walls 112 should have a height greater than 20 mm, so as to prevent external water from immersing into the battery pack.
- the wall portion 11 is formed by two or more stacked base plates. Specifically, the wall portion 11 is formed by two base plates, to further reduce the weight and volume of the casing.
- the two base plates include a first base plate 21 and a second base plate 22 .
- the cavity 20 may be formed by an outwardly projecting convex wall 221 of the second base plate 22 and a flat wall 211 of the first base plate 21 and corresponding to the convex wall 221 .
- the cavity 20 may be formed by an outwardly projecting convex wall 221 of the second base plate 22 and an outwardly projecting convex wall (not shown) of the first base plate 21 .
- the external force acts on the convex wall 221 at first and then is transmitted to the cavity 20 , the second base plate 22 and the first base plate 21 by the convex wall 221 .
- the impact resistance of the casing 1 can be improved.
- the first base plate 21 and the second base plate 22 are stacked in a direction from the receiving space 10 to an exterior of the casing 1 , and thus the flat wall 211 of the first base plate 21 is disposed close to the battery assembly 2 of the battery pack. Accordingly, a surface of the first base plate 21 close to the battery assembly 2 is approximately planar, which can increase a contact area between the first base plate 21 and the battery assembly 2 . As a result, the force transmitted to the battery assembly 2 can be uniformly dispersed, which can avoid a failure of the battery assembly 2 due to a local excessive external impact force, thereby improving the safety of the battery assembly 2 .
- the cavities 20 are formed between the first base plate 21 and the second base plate 22 by a blow molding process.
- the material of the base plate is aluminum or an aluminum alloy having an elongation at break ⁇ 20%.
- the tensile strength ⁇ 1 of the material of the first base plate 21 is equal to or greater than the tensile strength ⁇ 2 of the material of the second base plate 22 , which facilitates controlling the amount of deformation of the first base plate 21 and that of the second base plate 22 in the blow molding process, such that the relatively straight flat wall 211 can be formed in the first base plate 21 .
- the convex wall 221 of the second substrate 22 includes a top portion 2211 and a side portion 2212 connected to the top portion 2211 .
- the top portion 2211 is planar or curved, and there is a smooth transition between the top portion 2211 and the side portion 2212 .
- the top portion 2211 is preferably planar, which can increase a contact area of the convex wall 221 with an external device, facilitate uniform dispersion of the external force, and prevent the external force from acting on the highest point of the convex wall 221 , causing cracking of the convex wall 221 .
- the top portion 2211 and the side portion 2212 are smoothly transitioned, which facilitates the dispersion of the force and can increase the stability of the convex wall 221 , thereby avoiding the convex wall 221 from being deformed or broken due to excessive local force.
- a ratio of a wall thickness t 1 of the flat wall 211 to a wall thickness t 2 of the convex wall 221 is in a range of 0.5 ⁇ t 2 /t 1 ⁇ 1. If t 2 /t 1 >1, the first base plate 21 will be easily twisted and deformed when forming the cavity 20 by the blow molding process, causing that the first base plate 21 is deformed at the surface close to the battery assembly 2 and thus cannot be attached to the battery assembly 2 ; If t 2 /t 1 ⁇ 0.5, the convex wall 221 of the second base plate 22 will easily be broken during use since the convex wall 221 is too thin, causing a seal failure of the cavity 20 .
- a height h of the cavity 20 is in a range of h ⁇ 5 ⁇ t 1 . If the height h>5 ⁇ t 1 , the second base plate 22 will be easily broken in the blow molding process. A ratio of the height h to a width W of the cavity 20 is in the range of h/W ⁇ 0.5, and if the height h is too great, the first base plate 21 will be easily twisted and deformed. If the height h is too small, a fluid flow resistance will increase, which brings an adverse effect to the thermal management of the battery assembly 2 .
- a spherical corner 113 is formed between the bottom wall 111 and two adjacent side walls 112 . Since the wall thickness at the spherical corner 113 is thin, it is disadvantageous to arrange the cavity 20 . Moreover, the spherical corner 113 is easily broken under the impact of an external force. In order to avoid the sealing of the cavity 20 from being affected by the damage of the spherical corner 113 , a minimum distance d from an intersection line between two adjacent side walls 112 to the cavity 20 is in a range of d ⁇ 25 mm, to weaken the external force transmitted from the spherical corner 113 to the cavity 20 .
- the minimum distance d from the cavity 20 close to one side wall 112 formed in the bottom wall 111 to the side wall 112 is equal to or greater than 25 mm, to avoid a rupture of the cavity 20 and thus a seal failure due to the spherical corner 113 subjected to an external force, as shown in FIG. 4 .
- the wall portion 11 of the casing 1 includes a bottom wall 111 and side walls 112 surrounding on a peripheral side of the bottom wall 111 .
- the cavity 20 may be formed in the bottom wall 111 , may be formed in the side walls 112 , and may be formed in both the bottom wall 111 and the side walls 112 .
- the embodiments of the present disclosure are described by taking the cavity 20 formed in the bottom wall 111 as an example.
- the plurality of cavities 20 formed in the bottom wall 111 are in communication with each other to form a flow passage R.
- An inlet pipe 13 and an outlet pipe 14 are disposed on the side wall 112 of the casing 1 .
- the inlet pipe 13 and the outlet pipe 14 are in communication with two ends of the flow passage R, respectively, and are located on the same side of the side wall 112 to reduce an overall size of the casing 1 .
- the inlet pipe 13 and the outlet pipe 14 are identical or similar in structure.
- a mounting step 131 and a welding step 132 are disposed on the inlet pipe 13 and spaced apart from each other, wherein the inlet pipe 13 is fixed to the side wall 112 by the welding step 132 , and is electrically connected to an external device via the mounting step 131 .
- the plurality of cavities 20 may form a plurality of liquid inflow channels and a plurality of liquid return channels arranged side by side in the bottom wall 111 .
- the plurality of liquid inflow channels and the plurality of liquid return channels are communicated with each other at one ends, and the plurality of liquid inflow channels are connected to the inlet pipe 13 at the other end while the plurality of liquid return channels are connected to the outlet pipe 14 at the other ends, to form a plurality of U-shaped flow passages in parallel.
- the thermal management of the entire battery assembly 2 can be performed by the phase change material or the cooling liquid in the flow passages.
- one end of the inlet pipe 13 is connected to a cooling liquid input device, and an inflow confluence region R 1 is formed in the wall portion 11 corresponding to the other end of the inlet pipe 13 ; and one end of the outlet pipe 14 is connected to a cooling liquid output device, and an outflow confluence region R 2 is formed in the wall portion 11 corresponding to the other end of the outlet pipe 14 , wherein the inflow confluence region R 1 and the outflow confluence region R 2 are isolated from each other to increase a flow rate of the cooling liquid in each flow channel.
- the inflow confluence region R 1 is a cavity 20 located between the side wall 112 and the bottom wall 111 , which is formed between the first base plate 21 and the second base plate 22 by the blow molding process, and the inflow confluence region R 1 is in communication with the plurality of liquid inflow channels arranged side by side.
- the outflow confluence region R 2 is a cavity 20 located between the side wall 112 and the bottom wall 111 , which is formed between the first base plate 21 and the second base plate 22 by the blow molding process, and the outflow confluence region R 2 is in communication with the plurality of liquid return channels arranged side by side.
- the cooling liquid is introduced into the inflow confluence region R 1 via the inlet pipe 13 , and then enters the respective liquid inflow channels arranged side by side along the arrows in FIG. 6 . After that, the cooling liquid turns at the ends of the respective liquid inflow channels, enters the respective liquid return channels arranged side by side along the arrows in FIG. 6 , and then converges at the outflow confluence region R 2 at the ends of the respective liquid return channels. Finally, the cooling liquid discharges from the outlet pipe 14 . Since the temperature of the cooling liquid gradually rises during the flow from the inlet pipe 13 to the outlet pipe 14 , the portion of the casing 1 near the liquid inflow channels generally has a temperature difference from the portion of the casing 1 near the liquid return channels. Therefore, the above arrangement of the channels allows the temperature distribution of the battery assembly 2 to be relatively uniform.
- the battery pack is further provided with a temperature control device to control a temperature of the phase change material.
- a temperature of the battery assembly 2 in the battery pack is lower than a lowest target temperature
- the phase change material within the cavities 20 can be heated to change from a solid state to a liquid state, so that the phase change material can release heat and provide the heat to the battery assembly.
- the battery assembly 2 can be rapidly heated especially when the vehicle is parked in a cold environment.
- the temperature of the phase change material within the cavities 20 can be lowered such that the phase change material can absorb heat from the battery assembly 2 during transition from the liquid state to the solid state, thereby quickly removing the heat from the battery assembly 2 .
- the temperature distribution of the entire battery assembly 2 can be uniform, and the thermal management of the battery assembly 2 can be improved.
- the plurality of liquid inflow channels and the plurality of liquid return channels arranged side by side may or may not in communication with each other.
- the flow passage formed by the plurality of cavities 20 is not limited to the example shown in FIG. 6 , and may be, for example, formed as an S-shaped flow passage, a hollow square shaped flow passage, or the like, and specifically, a path of the flow passage formed by the plurality of cavities 20 may be reasonably arranged depending on the configuration of the battery assembly 2 in the battery pack, and more details will not be described here.
- the casing 1 is also applicable to a configuration in which the cavities 20 are formed in the side walls 112 , and a configuration in which the cavities 20 are formed in both the bottom wall 111 and the side walls 112 , and more details will not be described here.
- an embodiment of the present disclosure further provides a casing 1 for a battery pack, which has a similar configuration to the casing 1 as shown in FIG. 3 , except that the cavity 20 is provided with an island 30 therein.
- the description will be made by taking a plurality of cavities 20 formed in the bottom wall 111 as an example.
- the plurality of cavities 20 in the bottom wall 111 are in communication with each other to form a flow passage R.
- the wall portion 11 includes a first base plate 21 and a second base plate 22 which are stacked in a direction from the receiving space 10 to an exterior of the casing 1 .
- the cavity 20 is formed by an outwardly projecting convex wall 221 of the second base plate 22 and a flat wall 211 of the first base plate 21 corresponding to the convex wall 221
- the island 30 is formed by recessing the convex wall 221 toward the flat wall 211 .
- the convex wall 221 includes a top portion 2211 and a side portion 2212 connected with the top portion 2211 .
- the top portion 2211 is planar or curved, there is a smooth transition between the top portion 2211 and the side portion 2212 , and a portion of the convex wall 221 corresponding to the island 30 is attached to the flat wall 211 .
- An external force acting on the convex wall 221 can be partially transmitted to the first base plate 21 via the island 30 , which can further improve the impact resistance of the cavity 20 and of the casing 1 , and meanwhile can increase a rate of finished products when molding the casing 1 and avoiding damage of the casing 1 due to distortion deformation of the cavity 20 .
- there is smooth transition between a peripheral side of the island 30 and the convex wall 221 which can reduce a resistance experienced by the cooling liquid or the phase change material in a liquid state when flowing across the peripheral side of the island 30 .
- the cavity 20 has the island 30 disposed within it, the cavity 20 has a relatively reduced volume.
- a ratio of a height h of the cavity 20 to a width W of the cavity 20 can be set in a range of h/W ⁇ 1.
- the plurality of cavities 20 are in communication with each other to form a flow passage R within which the island 30 is disposed.
- the multiple islands 30 can effectively enhance a pressure resistance of the cavities 20 , and can ensure that a plurality of turbulences are formed by the cooling liquid or the phase change material in the liquid state flowing through the flow passage formed by the cavities 20 , which can make the temperature distribution of the wall portion 11 more uniform, and increase the heat exchange efficiency of the battery assembly 2 .
- a portion of the island 30 attached to the flat wall 211 is formed in a shape of strip or ellipse, and a long side of the strip or a major axis of the ellipse is parallel to the length direction of the flow passage R.
- a medium moves along the length of the flow passage R.
- the stripped or elliptical shape of the island 30 can relatively increase a contact area between the island 30 and the first base plate 21 , thereby avoiding deformation of the island 30 during the blow molding process.
- a ratio of a length L of the island 30 to a width W 1 of the island 30 is in a range of 2 ⁇ L/W 1 ⁇ 5, wherein the length L is in a range of 5 mm ⁇ L ⁇ 15 mm. If the length or width of the island 30 is too large, a flow resistance in the cavity 20 will be increased, and if the length or width of the island 30 is too small, the cavity 20 will be easily broken during the blow molding process, or a structural strength of the cavity 20 will be insufficient.
- a first space L 1 is defined as a distance from a center of the island 30 to one side of the cavity 20 , and the first space L 1 is equal to or greater than the width W 1 of the island 30 .
- a distance between the centers of the islands 30 in two adjacent rows can be defined as a third space L 3
- a distance from a center of the island 30 closest to a side of the cavity 20 to the side of the cavity 20 can be regarded as the first space L 1 , wherein L 3 ⁇ W 1 and L 1 ⁇ W 1 . If L 1 ⁇ W 1 or L 3 ⁇ W 1 , the cavity 20 will be easily broken during the blow molding process.
- a second space L 2 is defined as a distance between two adjacent islands 30 in each row in the length direction of the flow passage R.
- the second space L 2 is equal to or greater than the first space L 1 , and if the second space L 2 is smaller than the first space L 1 , the cavity 20 will be easily broken during the blow molding process.
- the casing 1 for a battery pack provided by the embodiments of the present disclosure can not only improve the structural strength of the casing 1 and of the cavities 20 , but also can change a flow capacity and a flow rate of the fluid in the cavities 20 , which can make the temperature distribution of the wall portion 11 more uniform, increase the heat exchange efficiency of the battery assembly 2 , and further improve the thermal management of the battery pack.
- the casing 1 for the battery pack includes a support member 15 fixed to the bottom wall 111 .
- the support member 15 is provided with a plurality of threaded holes, and a fixing frame of the battery assembly 2 is provided with through holes.
- the battery assembly 2 can be fixed in the receiving space 10 by passing screws through the threaded holes and the through holes.
- the cover 3 can close the opening of the casing 1 to form an enclosed space for accommodating the battery assembly 2 together with the receiving space 10 of the casing 1 .
- a thermal conductive adhesive can be applied between an inner surface of the bottom wall 111 and the battery assembly 2 , to allow heat to be rapidly transferred between the battery assembly 2 and the cavities 20 .
- the casing 1 further includes a protective member 16 , which is kept away from the cavities 20 and fixed at an edge of the casing 1 , to support the entire casing 1 and protect the cavities 20 from being damaged by external components. Also, the battery pack can be fixed to the vehicle or other components via the protective member 16 .
- the embodiments of the present disclosure further provide a battery pack comprising a casing 1 according to any one of the embodiments as described above, in which the heat exchange efficiency of the battery assembly 2 can be increased and the thermal management can be improved.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
Description
-
- 1—casing;
- 10—receiving space;
- 11—wall portion;
- 111—bottom wall;
- 112—side wall;
- 113—spherical corner;
- 12—brim portion;
- 13—inlet pipe;
- 131—mounting step;
- 132—welding step;
- 14—outlet pipe;
- 15—support member;
- 16—protective member;
- 20—cavity;
- 21—first base plate;
- 211—flat wall;
- 22—second base plate;
- 221—convex wall;
- 2211—top portion;
- 2212—side portion;
- 30—island;
- 2—battery assembly;
- 3—cover;
- R—flow passage;
- R1—inflow confluence region; and
- R2—outflow confluence region.
Claims (16)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201811361312.X | 2018-11-15 | ||
CN201811361312.XA CN111192984A (en) | 2018-11-15 | 2018-11-15 | A box and battery package for battery package |
Publications (2)
Publication Number | Publication Date |
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US20200161602A1 US20200161602A1 (en) | 2020-05-21 |
US11309602B2 true US11309602B2 (en) | 2022-04-19 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US16/433,680 Active 2040-04-06 US11309602B2 (en) | 2018-11-15 | 2019-06-06 | Casing for battery pack and battery pack |
Country Status (3)
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US (1) | US11309602B2 (en) |
EP (1) | EP3654443B1 (en) |
CN (1) | CN111192984A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111192985A (en) * | 2018-11-15 | 2020-05-22 | 宁德时代新能源科技股份有限公司 | A box and battery package for battery package |
CN116018716B (en) * | 2021-07-29 | 2024-01-26 | 宁德时代新能源科技股份有限公司 | Heat exchange member, manufacturing method and manufacturing system thereof, battery and electricity utilization device |
CN114614150B (en) * | 2022-03-20 | 2024-08-13 | 中国第一汽车股份有限公司 | Thermal management device for battery module, power battery assembly and vehicle |
WO2024119332A1 (en) * | 2022-12-05 | 2024-06-13 | 宁德时代新能源科技股份有限公司 | Separator, preparation method therefor, and secondary battery and electrical apparatus related thereto |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2635427A1 (en) | 1976-08-06 | 1978-02-09 | Varta Batterie | Heat exchanger system for battery - consists of double-walled structure with liq. inlets and outlets that also acts as battery housing |
US5278002A (en) * | 1992-09-22 | 1994-01-11 | Lydall, Inc. | Battery cover |
CN1996641A (en) | 2006-12-25 | 2007-07-11 | 程浩川 | A battery shell for the temperature control of the lead-acid battery |
CN101510593A (en) | 2009-03-20 | 2009-08-19 | 徐敖奎 | Temperature control case for lithium battery bag |
CN201378601Y (en) | 2009-03-20 | 2010-01-06 | 徐敖奎 | Temperature control shell of lithium battery pack |
US20120312614A1 (en) * | 2011-06-08 | 2012-12-13 | Honda Motor Co., Ltd. | Power supply apparatus for vehicle |
CN103325964A (en) | 2013-06-20 | 2013-09-25 | 华南理工大学 | Air cooled electric automobile battery thermal-management device containing phase change material |
DE102012012663A1 (en) | 2012-06-23 | 2013-12-24 | Volkswagen Aktiengesellschaft | Housing for carrying and cooling lithium ion battery pack for drive of electric vehicle, has separation body arranged between operating device and trough, where body and trough limit intermediate space to guide coolant in flow-proof design |
US20160036104A1 (en) * | 2014-07-31 | 2016-02-04 | Dana Canada Corporation | Battery cell heat exchanger with graded heat transfer surface |
US20160049705A1 (en) | 2013-03-29 | 2016-02-18 | Valeo Systemes Thermiques | Heat-exchange panel for battery heat management and associated production method |
US20170179555A1 (en) | 2014-09-04 | 2017-06-22 | Mahle International Gmbh | Cooling plate |
CN106898711A (en) | 2017-02-28 | 2017-06-27 | 北京新能源汽车股份有限公司 | Battery pack lower shell, battery pack and vehicle |
CN107482279A (en) | 2017-08-22 | 2017-12-15 | 浙江银轮机械股份有限公司 | The cooling device and its coldplate of a kind of dynamic lithium battery |
DE102016222550A1 (en) | 2016-11-16 | 2018-05-17 | Volkswagen Aktiengesellschaft | Floor arrangement for a temperature-controlled battery housing and method for its production |
CN207504138U (en) | 2017-10-31 | 2018-06-15 | 北京普莱德新能源电池科技有限公司 | A kind of power battery cooled plate for soldering |
CN108666704A (en) | 2018-06-29 | 2018-10-16 | 威马智慧出行科技(上海)有限公司 | A kind of heat-exchanger rig |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107833996A (en) * | 2017-10-30 | 2018-03-23 | 北京普莱德新能源电池科技有限公司 | A kind of individual layer battery case for carrying bilayer cells module |
CN207504050U (en) * | 2017-10-30 | 2018-06-15 | 北京普莱德新能源电池科技有限公司 | A kind of individual layer battery case for carrying bilayer cells module |
CN209266461U (en) * | 2018-11-15 | 2019-08-16 | 宁德时代新能源科技股份有限公司 | Cabinet and battery pack for battery pack |
-
2018
- 2018-11-15 CN CN201811361312.XA patent/CN111192984A/en active Pending
-
2019
- 2019-06-06 US US16/433,680 patent/US11309602B2/en active Active
- 2019-06-11 EP EP19179418.9A patent/EP3654443B1/en active Active
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2635427A1 (en) | 1976-08-06 | 1978-02-09 | Varta Batterie | Heat exchanger system for battery - consists of double-walled structure with liq. inlets and outlets that also acts as battery housing |
US5278002A (en) * | 1992-09-22 | 1994-01-11 | Lydall, Inc. | Battery cover |
CN1996641A (en) | 2006-12-25 | 2007-07-11 | 程浩川 | A battery shell for the temperature control of the lead-acid battery |
CN101510593A (en) | 2009-03-20 | 2009-08-19 | 徐敖奎 | Temperature control case for lithium battery bag |
CN201378601Y (en) | 2009-03-20 | 2010-01-06 | 徐敖奎 | Temperature control shell of lithium battery pack |
US20120312614A1 (en) * | 2011-06-08 | 2012-12-13 | Honda Motor Co., Ltd. | Power supply apparatus for vehicle |
DE102012012663A1 (en) | 2012-06-23 | 2013-12-24 | Volkswagen Aktiengesellschaft | Housing for carrying and cooling lithium ion battery pack for drive of electric vehicle, has separation body arranged between operating device and trough, where body and trough limit intermediate space to guide coolant in flow-proof design |
US20160049705A1 (en) | 2013-03-29 | 2016-02-18 | Valeo Systemes Thermiques | Heat-exchange panel for battery heat management and associated production method |
CN103325964A (en) | 2013-06-20 | 2013-09-25 | 华南理工大学 | Air cooled electric automobile battery thermal-management device containing phase change material |
US20160036104A1 (en) * | 2014-07-31 | 2016-02-04 | Dana Canada Corporation | Battery cell heat exchanger with graded heat transfer surface |
US20170179555A1 (en) | 2014-09-04 | 2017-06-22 | Mahle International Gmbh | Cooling plate |
DE102016222550A1 (en) | 2016-11-16 | 2018-05-17 | Volkswagen Aktiengesellschaft | Floor arrangement for a temperature-controlled battery housing and method for its production |
CN106898711A (en) | 2017-02-28 | 2017-06-27 | 北京新能源汽车股份有限公司 | Battery pack lower shell, battery pack and vehicle |
CN107482279A (en) | 2017-08-22 | 2017-12-15 | 浙江银轮机械股份有限公司 | The cooling device and its coldplate of a kind of dynamic lithium battery |
CN207504138U (en) | 2017-10-31 | 2018-06-15 | 北京普莱德新能源电池科技有限公司 | A kind of power battery cooled plate for soldering |
CN108666704A (en) | 2018-06-29 | 2018-10-16 | 威马智慧出行科技(上海)有限公司 | A kind of heat-exchanger rig |
Non-Patent Citations (3)
Title |
---|
PCT International Search Report for PCT/CN2019/118664, dated Jan. 23, 2020, 10 pages. |
The extended European search report dated Jan. 8, 2020 for European Application No. 19179418.9, 8 pages. |
The first Office Action for European Application No. 19179418.9, dated Jul. 31, 2020, 5 pages. |
Also Published As
Publication number | Publication date |
---|---|
EP3654443B1 (en) | 2021-07-21 |
EP3654443A1 (en) | 2020-05-20 |
CN111192984A (en) | 2020-05-22 |
US20200161602A1 (en) | 2020-05-21 |
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